Use the results of the two previous problems to showthat events simultaneous in one system are not simultaneousin another system moving with respect to thefi rst. Consider a spacetime diagram with x, ct and x,ct axes drawn such that the origins coincide and theclocks were synchronized at t t 0. Then considerevents 1 and 2 that occur simultaneously in the fi xedsystem. Are they simultaneous in the moving system?

PHYS 242 BLOCK 3 NOTES Sections 24.1, 24.3 to 24.6 Suppose we have two conductors of any shape that are insulated from one another. Conductor a has a positive excess charge Q (in C) on it. Conductor b has a negative excess charge –Q on it. This Q is called the charge stored. We consider only cases in which the potential differeace V b V =ab (in V) is directly proportional toQ. Then the ratio ofQ tis a constant and the equation C ≡ defines the capacitance C ab V ab coulomb C (in F = farad = volt = V ). (Don’t confuse the capacitance C with the charge unit C = coulomb.) The capacitanceC is never negative. Also, the quQ a